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Hi, as you mentioned you compare power /Sq inch. under direct light. If this installation is on a fixed point, the flat cells will produce more power than the prototype due to the shade of the sun panel on his neighbors. So the only advantage of this way of building, is to have small place to fix them and a sun tracker to get most of direct sun on them. Some other existing prototype then give less than 200 %.,what is a good return but with an investement in PV x 3. So if PV price get down, it will be a good investment. Actually it isn't.
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